Mug with multiple sip holes and lid gasket
CA 2315498 C · Owner: Murakami, Yasuhiro · Inventors: Kuwano, Toshiaki; Murakami, Yasuhiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A travel mug includes a vessel 10 defined by two shells 14 16 nested within one another and spaced from each other to define an insulating space 18. Both have open upper ends 20 22 that are joined in an annular upper end joint 24. An annular shoulder gasket 26 is located on the joint 24 and an annular shoulder 30 is mounted on one of the shells 14 16 to cover the shoulder gasket 26. The shoulder has a radially inwardly directed gross sealing surface 40 near a lower edge as well as a radially inner thread 42. A lid 12 is removably threaded on the shoulder 30 and has an annular side wall 56 merging with a bottom wall 52 having an imperforate center 52. An array of sip holes 66 is located at …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed August 9, 2000 and granted January 29, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 9, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 9, 2022.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.